I’ve noticed on the road it seems like you always see rust on Ram trucks. Honestly I think all truck’s will rust up here and some brands from what I’ve notice rust faster than others.
I have two different friends that each own body shops. One in MN and one in SD. I’ve been talking to both recently about rust and which truck models they are seeing the most problems with, as I’m about to drop $35K or more on a truck sometime soon.
Dodges are rusting the fastest. Both shops have had 2016 Rams in for quarter panel repair/replacement already.
2014 & newer Chev & GM trucks seem to be ok so far, both of my buddies feel the prime areas for concern will be the wheel wells if the truck has the wheel well trim installed.
2014 & older fords the first area of concern is the cab corners. Very very common to see cab corners shot on these models.
2015 & newer fords seem to only have dissimilar metal corrosion where steel fasteners are used on the aluminum body.
2007 & newer Toyotas seem to have rust resistant bodies, but lingering frame rust concerns even though class action lawsuits were supposed to clear that up and force design changes.